As mentioned in the title, when we use PyQt5 compose the interface, we often need another sub-window that is different from the main window. It may be a different function, it may be a setting of the main program … anything is possible.
In PyQt5, it is not so difficult to open another window. Below, I use a simple example to demo how to open the sub-window.
Open Window
To complete another window is actually very simple: just write another window program. For example, I now have a main window:
class MainWindow(QMainWindow): def __init__(self): super(MainWindow, self).__init__() self.resize(400, 300) # Button self.button = QPushButton(self) self.button.setGeometry(0, 0, 400, 300) self.button.setText('Main Window') self.button.setStyleSheet('font-size:40px') # Sub Window self.sub_window = SubWindow() # Button Event self.button.clicked.connect(self.sub_window.show)
At the same time, I also have another sub-window that is about to be opened:
class SubWindow(QWidget): def __init__(self): super(SubWindow, self).__init__() self.resize(400, 300) # Label self.label = QLabel(self) self.label.setGeometry(0, 0, 400, 300) self.label.setText('Sub Window') self.label.setAlignment(Qt.AlignCenter) self.label.setStyleSheet('font-size:40px')
Then when I click the button of the main window, it will show the window of the sub-window:
Basically it’s just that. Is it quite simple?
Complete Code
# -*- coding: utf-8 -*- import sys from PyQt5.QtWidgets import * from PyQt5.QtCore import * class MainWindow(QMainWindow): def __init__(self): super(MainWindow, self).__init__() self.resize(400, 300) # Button self.button = QPushButton(self) self.button.setGeometry(0, 0, 400, 300) self.button.setText('Main Window') self.button.setStyleSheet('font-size:40px') # Sub Window self.sub_window = SubWindow() # Button Event self.button.clicked.connect(self.sub_window.show) class SubWindow(QWidget): def __init__(self): super(SubWindow, self).__init__() self.resize(400, 300) # Label self.label = QLabel(self) self.label.setGeometry(0, 0, 400, 300) self.label.setText('Sub Window') self.label.setAlignment(Qt.AlignCenter) self.label.setStyleSheet('font-size:40px') if __name__ == '__main__': app = QApplication([]) window = MainWindow() window.show() sys.exit(app.exec_())
thank you so much
You’re welcome~
Nice